Accession Number:

ADA303432

Title:

Phase Noise Cancellation in a Mixer Circuit: Analysis Using a Random Phase Function.

Descriptive Note:

Technical rept.,

Corporate Author:

ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL N J FIRE SUPPORT ARMAMENT CENTER

Personal Author(s):

Report Date:

1996-01-01

Pagination or Media Count:

48.0

Abstract:

A stochastic signal model is used to study the phase noise suppression in an ideal mixer circuit. The phase noise in a harmonic oscillator is modeled by a sinewave containing a random phase term. The random phase term is a random walk stochastic process. The problem is to calculate the phase noise reduction i.e., the decrease in sideband power which occurs when the oscillator signal is coherently mixed with a time delay replica of itself. The results confirm the validity of the well know engineering formula for the phase noise reduction as a function of the time delay. An improved formula is also obtained. Although the results are derived for a pure sinusoidal oscillator, the same analysis can also be applied to modulated signals such as FMCW, etc.

Subject Categories:

  • Active and Passive Radar Detection and Equipment
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE